<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{% block title %}{% endblock %}</title>
    <!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    {% block head %}

    {% endblock %}
</head>
<body>
<nav class="navbar navbar-default">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="#">千锋论坛</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">首页 <span class="sr-only">(current)</span></a></li>
        <li ><a href="{% url 'blog' %}">博客 <span class="sr-only">(current)</span></a></li>
        <li ><a href="#">视频 <span class="sr-only">(current)</span></a></li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
            {% if front_user %}
                  <li><a href="#">你好,{{ front_user.username }}</a></li>
                  <li><a href="{% url 'logout' %}">注销</a></li>
                {% else %}
                    <li><a href="{% url 'signin' %}">登录</a></li>
                    <li><a href="{% url 'signup' %}">注册</a></li>
            {% endif %}


      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>
{% block body %}

{% endblock %}
</body>
</html>